Method loadMapNode

radiantcore/map/MapResource.cpp:282–336

}

RootNodePtr MapResource::loadMapNode()
{
	RootNodePtr rootNode;

	// Open a stream - will throw on failure
    auto stream = openMapfileStream();

    if (!stream || !stream->isOpen())
    {
        throw OperationException(_("Could not open map stream"));
    }

    try
    {
        // Get the mapformat
        auto format = algorithm::determineMapFormat(stream->getStream(), _extension);

        if (!format)
        {
            throw OperationException(_("Could not determine map format"));
        }

        // Instantiate a loader to process the map file stream
        MapResourceLoader loader(stream->getStream(), *format);

        // Load the root from the primary stream (throws on failure or cancel)
        rootNode = loader.load();

        if (rootNode)
        {
            rootNode->setName(_name);
        }

        // Check if an info file is supported by this map format
        if (format->allowInfoFileCreation())
        {
            auto infoFileStream = openInfofileStream();

            if (infoFileStream && infoFileStream->isOpen())
            {
                loader.loadInfoFile(infoFileStream->getStream(), rootNode);
            }
        }

        refreshLastModifiedTime();
    }
    catch (const OperationException& ex)
    {
        // Re-throw the exception, prepending the map file path to the message (if not cancelled)
        throw ex.operationCancelled() ? ex : 
            OperationException(fmt::format(_("Failure reading map file:\n{0}\n\n{1}"), getAbsoluteResourcePath(), ex.what()));
    }

	return rootNode;
}

stream::MapResourceStream::Ptr MapResource::openFileStream(const std::string& path)
{